if(found) {
	  if(i == list.length) i -= 2;
	    list.splice(i, 2);
	    interp.setVar(name, dict);
	}
	return dict;
      });
    /*
      if(typeof(jQuery) != 'undefined') {
      this.registerCommand("dom", function (interp, args) {
      var selector = args[1].toString();
      var fn = args[2].toString();
      args = args.slice(3);
      for (var i in args) args[i] = args[i].toString();
      var q = $(selector);
      q[fn].apply(q,args);
      return "dom    " + selector;
      });
      }*/
    this.registerCommand("eval",function (interp, args) {
        this.arity(args, 2,Infinity);
        for (var i = 1; i < args.length; i++) args[i] = args[i].toString();
        if (args.length == 2) var code = args[1];
        else                  var code = args.slice(1).join(" ");
        return interp.eval(code);
      });

    */
    this.registerCommand("exit",function (interp, args) {
	this.arity(args, 1,2);
	var rc = 0;
	if (args.length == 2) rc = args[1];
	process.exit(rc);
      });
    var acos = Math.acos;
    var exp  = Math.exp;
    var sqrt = Math.sqrt; // "publish" other Math.* functions as needed

    this.registerCommand("expr", function (interp, args) {
	var expression = args.slice(1).join(" ");
	return interp.expr(interp, expression);
      });
    this.expr = function (interp, expression) { // also used in for, if, while
      var mx;



      try {
	mx = expression.match(/(\[.*\])/g);
	for (var i in mx)
	  puts("have to deal with "+mx[i].toString());
      } catch(e) {puts(i+". exception: "+e);}
      mx = expression.match(/(\$[A-Za-z0-9_:]+)/g);
      for (var i in mx) {

        var body = args[4].toString();
        interp.inLoop = true;
        interp.code = interp.OK;
        while (true) {
            test = interp.objectify(interp.expr(interp, cond));
            if (!test.toBoolean()) break;
            interp.eval(body);
            var ic = interp.code; // tested after step command
            interp.eval(step);
            if(ic == interp.BRK) break;
            if(ic == interp.CNT) continue;
        }
        interp.inLoop = false;
        if(interp.code == interp.BRK || interp.code == interp.CNT)
            interp.code = interp.OK;
        return "";
    });
    this.registerCommand("foreach", function (interp, args) {
        this.arity(args, 4);
        var list = args[2].toList();
        var body = args[3].toString();
        var res    = "";

    });
    this.registerSubCommand("info", "exists", function (interp, args) {
        this.arity(args, 2);
	var name = args[1];
	try {interp.getVar(name); return 1;} catch(e) {return 0;}
    });
    this.registerSubCommand("info", "globals", function (interp, args) {
        return interp.mkList(interp.callframe[0]);
    });
    /* not in "real" Tcl
    this.registerSubCommand("info", "isensemble", function (interp, args) {
        this.arity(args, 2);
        var name = args[1].toString();
	var cmd  = interp.getCommand(name);
        return (cmd != null && cmd.ensemble != null)? "1" : "0";
	}); */
    this.registerSubCommand("info", "level", function (interp, args) {
	if(args.length == 1)
	  return interp.level;
	var delta = args[1];
	return interp.levelcall[interp.level - delta];
    });
    this.registerSubCommand("info", "nameofexecutable", function (interp, args) {
            return process.execPath;
    });
    this.registerSubCommand("info", "patchlevel", function (interp, args) {
	return interp.patchlevel;
    });
    this.registerSubCommand("info", "procs", function (interp, args) {
        return interp.mkList(interp.procs);
    });
    this.registerSubCommand("info", "script", function (interp, args) {
        return interp.script;
    });
    this.registerSubCommand("info", "vars", function (interp, args) {



	var res = [];
	for(var i in interp.callframe[interp.level]) {
	  try {
	    if(interp.getVar(i) != null) {res.push(i);}
	  } catch(e) {};
	}
	return res;
    });

    this.registerCommand("join", function (interp, args) {
	this.arity(args, 2, 3);
	var lst = args[1].toList();
	var sep = " ";
	if(args.length == 3) sep = args[2].toString();
	var res = [];
	var re  = /^{.*}$/;